EM78807数据手册Elan中文资料规格书

描述 Description

This is an 8-bit CID (Call Identification) RISC type microprocessor with low power , high speed CMOS technology .Integrated onto a single chip are on-chip watchdog (WDT), RAM, ROM, programmable real time clock /counter, internal interrupt, power down mode, LCD driver, Energy Detector (DED), large voice ROM for midi data, Current DAC and tri-state I/O.It provides a single chip solution to design a CID of calling message display.

特性 Features

Single power supplyOperating voltage range :
* 2.6V ~ 3.6V(Normal mode under 17.913MHz)
* 2.2V ~ 3.6V(Normal mode under 447.829KHz ~ 14.331MHz)
* 2.0V ~ 3.6V(Sleep/Green mode)
CPU8-bit RISC kernel
99.9% single instruction cycle commands
Clock32.768KHz clock source
Built-in PLL to generate main clock 3.5826MHz x 0.125, 0.25, 0.5, 1, 2, 3, 4 or 5
Timer and counterWatch Dog : Programmable free running on chip watchdog timer
TCC : 8-bit real time clock/counter (TCC) with 8-bit prescaler
COUNTER1: 8-bit counter with 8-bit prescaler can be an interrupt source
COUNTER2: 8-bit counter with 8-bit prescaler can be an interrupt source
Memory16K x 13 on-chip program ROM
304K x 4 on-chip voice ROM (the max. timing from voice ROM enable to its data finish = 1.25us)
0.5K x 8 on-chip CID RAM
144 x 8 common registers
I/OUp to 2 output/38 bi-directional tri-state I/O ports (5 independent I/O)
IO with internal Pull high, wake-up and interrupt functions
Operation modeThree modes can be selected.(Main clock is generated by internal PLL.)

应用 Application

Caller ID simple phone units for FSK/DTMF dual system with midi application.
Applications for LCD dots less than 8x40/4x40 and few I/Os
Application for many I/Os less than 40 and no LCD display